Chapter 7 Vocab

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Across
  1. 3. transfer of electrons between chemical species
  2. 8. the number in front of the formula
  3. 9. an amount of substance that contains as many objects
  4. 11. releases energy by light or heat
  5. 12. a new material formed in a chemical reaction
  6. 13. A + BC → B + AC.
  7. 15. a substance burns in the presence of Oxygen,
Down
  1. 1. A + B → AB.
  2. 2. AB + CD → AD + CB
  3. 4. the energy stored in the bonds of chemical compounds.
  4. 5. equation a representation of a chemical reaction using symbols of the elements to indicate the amount of substance
  5. 6. a substance that undergoes changes during a reaction
  6. 7. AB→A+B.
  7. 10. accompanied by or requiring the absorption of heat.
  8. 14. the ratio between the mass and the amount of substance